Multiple antenna high isolation apparatus and application thereof
View Patent ↗A multiple antenna apparatus includes a substrate, a first antenna structure, and a second antenna structure. The first antenna structure includes a first metal trace that has a first pattern confined in a first geometric shape and has a near-zero electric field plane. The second antenna structure includes a second metal trace that has a first pattern confined to a second geometric shape. The second antenna structure is positioned on the substrate in substantial alignment with the near-zero electric field plane of the first antenna structure.
1. A multiple antenna apparatus comprises:
a substrate;
a first antenna structure including a first metal trace that has a first pattern confined in a first geometric shape, where the first antenna structure has a near-zero electric field plane, and wherein the substrate supports the first antenna structure;
a second antenna structure including a second metal trace that has a first pattern confined to a second geometric shape, wherein the second antenna structure is positioned on the substrate in substantial alignment with the near-zero electric field plane of the first antenna structure; and
the first metal trace including:
a first segment on a first layer of the substrate, wherein the first segment has a first segment geometric shape; and
a second segment on a second layer of the substrate, wherein the second segment is coupled to the first segment, wherein the second segment has a second segment geometric shape, and wherein the first geometric shape includes the first and second segment geometric shapes; and
the second metal trace including:
a third segment on the first layer of the substrate, wherein the third segment has a third segment geometric shape; and
a fourth segment on the second layer of the substrate, wherein the fourth segment is coupled to the third segment, wherein the fourth segment has a fourth segment geometric shape, and wherein the second geometric shape includes the third and fourth segment geometric shapes.
2. The multiple antenna apparatus of claim 1 , wherein each of the first patterns of the first and second metal traces comprises a geometric shape of a recursive fractal curve pattern, wherein the recursive fractal curve pattern includes at least one of:
an n th order, where n is equal to or greater than 1;
a y th order, where y is equal to or greater than 1;
a first line width;
a second line width;
a first shaping factor; and
a second shaping factor.
3. The multiple antenna apparatus of claim 1 further comprises the first geometric shape substantially equals the second geometric shape, wherein the first geometric shape is of a first size and the second geometric shape is of a second size.
4. The multiple antenna apparatus of claim 1 further comprises at least one of:
the first antenna structure including a dipole antenna and the second antenna structure including a monopole antenna; and
the first antenna structuring including multiple antennas and the second antenna structure including at least one antenna.
5. The multiple antenna apparatus of claim 4 , wherein the dipole antenna further comprises a bow tie shape.
6. The multiple antenna apparatus of claim 4 further comprises:
the dipole antenna on a first layer of the substrate; and
the monopole antenna on a second layer of the substrate.
7. The multiple antenna apparatus of claim 1 further comprises:
a ground plane electromagnetically coupled to at least one of the first and second antenna structures.
8. The multiple antenna apparatus of claim 1 further comprises each of the first and second antenna structures having a length tuned to at least one of a first frequency band and a second frequency band.
9. A multiple antenna apparatus comprises:
a substrate;
a dipole antenna that has a near-zero electric field plane, wherein the substrate supports the dipole antenna; and
a monopole antenna positioned on the substrate in substantial alignment with the near-zero electric field plane of the dipole antenna; and
a first and second trace of the dipole antenna including:
a first segment on a first layer of the substrate, wherein the first segment has a first segment geometric shape; and
a second segment on a second layer of the substrate, wherein the second segment is coupled to the first segment, wherein the second segment has a second segment geometric shape, and wherein the first geometric shape includes the first and second segment geometric shapes; and
a trace of the monopole antenna including:
a third segment on the first layer of the substrate, wherein the third segment has a third segment geometric shape; and
a fourth segment on the second layer of the substrate, wherein the fourth segment is coupled to the third segment, wherein the fourth segment has a fourth segment geometric shape, and wherein the second geometric shape includes the third and fourth segment geometric shapes.
10. The multiple antenna apparatus of claim 9 further comprises:
the first trace of the dipole antenna having the first geometric shape;
the second trace of the dipole antenna having the first geometric shape;
the trace of the monopole antenna having the second geometric shape, wherein each of the first and second geometric shapes includes a recursive fractal curve pattern, wherein the recursive fractal curve pattern includes at least one of:
an n th order, where n is equal to or greater than 1;
a y th order, where y is equal to or greater than 1;
a first line width;
a second line width;
a first shaping factor; and
a second shaping factor.
11. The multiple antenna apparatus of claim 9 , wherein the dipole antenna further comprises a bow tie shape.
12. The multiple antenna apparatus of claim 9 further comprises:
the dipole antenna on a first layer of the substrate; and
the monopole antenna on a second layer of the substrate.
13. The multiple antenna apparatus of claim 9 further comprises:
a ground plane electromagnetically coupled to at least one of the dipole antenna and the monopole antenna.
14. A wireless front-end comprises:
a first amplifier;
a second amplifier;
a transformer balun operably coupled to the first amplifier; and
a multiple antenna apparatus that includes:
a substrate;
a dipole antenna operably coupled to the transformer balun, wherein the dipole antenna has a near-zero electric field plane, and wherein the substrate supports the dipole antenna; and
a monopole antenna operably coupled to the second amplifier, wherein the monopole antenna is positioned on the substrate in substantial alignment with the near-zero electric field plane of the dipole antenna; and
the dipole antenna comprising at least a first and second trace including:
a first segment on a first layer of the substrate, wherein the first segment has a first segment geometric shape; and
a second segment on a second layer of the substrate, wherein the second segment is coupled to the first segment, wherein the second segment has a second segment geometric shape, and wherein the first geometric shape includes the first and second segment geometric shapes; and
the monopole antenna comprising at least a first trace including:
a third segment on the first layer of the substrate, wherein the third segment has a third segment geometric shape; and
a fourth segment on the second layer of the substrate, wherein the fourth segment is coupled to the third segment, wherein the fourth segment has a fourth segment geometric shape, and wherein the second geometric shape includes the third and fourth segment geometric shapes.
15. The wireless front-end of claim 14 , wherein the multiple antenna apparatus further comprises:
the first trace of the dipole antenna having the first geometric shape;
the second trace of the dipole antenna having the first geometric shape;
the trace of the monopole antenna having the second geometric shape, wherein each of the first and second geometric shapes includes a recursive fractal curve pattern, wherein the recursive fractal curve pattern includes at least one of:
an n th order, where n is equal to or greater than 1;
a y th order, where y is equal to or greater than 1;
a first line width;
a second line width;
a first shaping factor; and
a second shaping factor.
16. The wireless front-end of claim 14 , wherein the dipole antenna further comprises a bow tie shape.
17. The wireless front-end of claim 14 further comprises:
the dipole antenna on a first layer of the substrate; and
the monopole antenna on a second layer of the substrate.
18. The wireless front-end of claim 14 , wherein the multiple antenna apparatus further comprises:
a ground plane electromagnetically coupled to at least one of the dipole antenna and the monopole antenna.
19. The wireless front-end of claim 14 further comprises:
the first amplifier including a power amplifier of a transmitter; and
the second amplifying including a low noise amplifier of a receiver.
20. The wireless front-end of claim 14 further comprises:
the first amplifier amplifying a first transmission signal of a multiple input multiple output (MIMO) signal or a single input multiple output (SIMO) signal; and
the second amplifier amplifying a second transmission signal of the MIMO or SIMO signal.
21. The wireless front-end of claim 14 further comprises:
the first amplifier amplifying a first reception signal of a multiple input multiple output (MIMO) signal or multiple input single output (MISO) signal; and
the second amplifier amplifying a second reception signal of the MIMO of MISO signal.